Hi again. I emailed Chris, and he kindly sent me the file longmaterials.sldmat. I'll copy the email here:
/Holy carp. That's a blast from the past Disclaimer: I've never used or verified the data in this document. Assume that it is incorrect and check before usage. Use at your own risk. See the attached Chris/
So yeah, 17 years in the past. The file works in solidworks 2022 no problem, and it has a lot of materials.